61031406 has 8 divisors (see below), whose sum is σ = 122062824. Its totient is φ = 20343800.

The previous prime is 61031393. The next prime is 61031407. The reversal of 61031406 is 60413016.

It is a sphenic number, since it is the product of 3 distinct primes.

61031406 is an admirable number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61031407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5085945 + ... + 5085956.

It is an arithmetic number, because the mean of its divisors is an integer number (15257853).

Almost surely, 2^61031406 is an apocalyptic number.

61031406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61031406 is a wasteful number, since it uses less digits than its factorization.

61031406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171906.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 61031406 is about 7812.2599803130. The cubic root of 61031406 is about 393.7172638947.

The spelling of 61031406 in words is "sixty-one million, thirty-one thousand, four hundred six".